Bottle closure



` May 20,1924. 1,494,673 I J. L. DUNNOCK ooooooooooo RE Patented May 20,1924.

JOHN L. ZD'UN'N'OCK,v OIi BALTIMORE, MARYLAND.

BOTTLE CLOSURE.

IApplication tiled April 3, 1923. Serial No. 629,691.

To all 'whom t may concern.'

Be it known that I, JOHN L. DUNNOCK, .a citizen of the United States,residing-at Baltimore city, State of Maryland, have invented certain newand useful Improvements in Bottle Closures, of which the following is aspecification.

This invention relates to bottles designed primarily for use inconnection with caps or closures such as shown, for example in Patent1,169,938 issued to Ine on February 1st, 1916. These caps have spacedinternal 4ribs between slits in the walls of the caps adapted to engageannular shoulders on the bottles to which the caps are applied. Somediiiiculty has been experienced in removingI these caps from the bottlesand an object o this invention is to so construct a bottle that, byrotating the cap on the bottle neck, the ribs on the cap will be pressedoutwardly from under the annular shoulder engaged thereby. Thus the capis released and can be removed readily from the bottle without the useof a tool.

lVith the foregoing and other objects in view which will appear as thedescription proceeds, the invention consists of certain novel details ofconstruction which willbe hereinafter more fully described and point-Figure 1 is an elevation of a bottle haw' -ing the present improvements,a cap being shown in section thereon.

Figure 2 is a section Online 2 2, Figure 1. Y

Referring to the figures by characters of reference, 1 designates abottle neck having ed out in the claims, it being understood an annulargroove 2 forming a shoulder 3. rlhe groove is vintersected by deiectingcams 4 formed integral with the bottle neck, each cam being provided atone side with a radial shoulder 5 While its other side is substantiallytangent to the inner Wall of the groove and constitutes a deflectingsurface,

as shown at 6.

The cap to be used with the bottle has been shown at 7 and has slits 8arranged in pairs in the Wall 9 thereof. rllhe metal between the slitsof each pair is oset inwardly to form ribs 10 and these are adapted tobe snapped groove 2 at points ast the shoulder 3 into tween the cams.When of the circumference of the neck and a portion of each cam beingHush with the edge of the shoulder.

2. l he combination with a bottle cap having an annular shoulderprovided with inwardly projecting shoulder engaging ribs; of a bottlehaving an annular groove orming a shoulder beneath which said ribsengage, and cams in said groove extending in the direction of thecircumference of the neck and each having a portion arranged to lift arespective rib to a1 level with the surface of the neck aboye the oove.

ln testimony whereof ture.

ax my signa- JOHN L. DUNNGCK.

